Nice idea, poor execution
The fwd bolt hole is not positioned quite correct for bbshd, needs opening 0.5mm to be able to get the bolt in. The web that goes up the downtube clashes with the fwd bolt lug on the bbshd unit and needs trimming by 2mm. The downtube bolt holes are not in line with the centre of the downtube. I would understand if I had a wide bottom bracket but mine is 68mm so it wouldn't fit anything. Also some nasty sharp corners that need to be radiused out.
Otherwise perfect! Lol.